Belt conveyor system

Abstract

The utility model discloses a belt conveyor system, including a belt conveyor arranged in a transport channel, the belt conveyor including a first belt conveyor near the upper end of the transport channel, a conveyor belt of the first belt conveyor is provided with an intaglio pattern, the intaglio pattern includes a plurality of connected J-shaped grooves, each J-shaped groove includes an oblique line segment and a bend segment whose head end is tangently connected to the rear end of the oblique line segment. The utility model can discharge excess water and leave a solid part with a higher gold content through the intaglio pattern of a special shape, and at the same time, can cooperate with the intaglio pattern to complete the pretreatment of water content through the positive pattern of a special shape, and quickly discharge excess water, so as to finally achieve the purpose of accurately controlling the water content of the material.

Description

Technical Field

[0001] The utility model relates to a transport device, in particular to a belt transport system. Background Art

[0002] Some large-scale operating mines in China have relatively old design and construction of smelting equipment due to their early construction time, and they mostly rely on smooth belt systems to transport and lift ore.

[0003] As the mining depth increases, the underground rock fragmentation becomes more severe, the groundwater outburst increases, the underground filling and support cycle shortens, and tailings are mixed into the ore, which greatly increases the water content of the ore entering the beneficiation process and forms a slurry. This poses severe challenges to the existing transportation system.

[0004] The traditional smooth belt system has the following defects when processing a mixture of ore and pulp: the ore pulp with appropriate concentration has a high gold content and needs to enter the next crushing process with the ore. However, there is often a lot of water mixed in the ore pulp. If the water content of the ore pulp entering the crushing device is too high, the crushing device cannot work properly. Ordinary smooth belts cannot control the excess water in the ore pulp. For example, when there is a large amount of ore blocking, a large amount of water will enter the next crushing process, causing the crushing device to not work properly; and when there is less ore, the ore pulp will return to the loading position along the inclined belt, causing the ore pulp to be unable to enter the next process, resulting in waste. Utility Model Content

[0005] The utility model provides a belt transport system, the purpose of which is to solve the problem that the water content of the transported ore pulp cannot be controlled.

[0006] The technical solution of this utility model is as follows:

[0007] A belt conveyor system, comprising a belt conveyor arranged in a transport channel, wherein the feeding end of the belt conveyor is lower than the unloading end, the belt conveyor comprises a frame, a driving roller and a driven roller mounted on the frame, and a conveyor belt connected between the driving roller and the driven roller, the frame is further provided with two left and right groups of rollers, the portion of the conveyor belt located above the frame is concave in the middle under the support of the rollers, the belt conveyor in the transport channel comprises a first belt conveyor near the upper end of the transport channel, and the conveyor belt of the first belt conveyor is provided with an engraved pattern;

[0008] The engraved pattern includes a plurality of connected J-shaped grooves, each J-shaped groove includes an oblique line segment and a return bend segment whose head end is tangentially connected to the rear end of the oblique line segment, and the opening of the return bend segment faces the front end, i.e., the direction of the unloading end of the first belt conveyor; the front end of the oblique line segment is located in the center of the belt, and the rear end points to one side edge of the conveyor belt, and the rear ends of the oblique line segments of two adjacent J-shaped grooves point to two different side edges of the conveyor belt;

[0009] For adjacent J-shaped grooves: the front end of the oblique line segment of the rear J-shaped groove is connected to the middle of the oblique line segment of the front J-shaped groove, and the tail end of the bend segment of the front J-shaped groove is connected to the middle of the oblique line segment of the next J-shaped groove.

[0010] As a further improvement of the belt conveyor system: the belt conveyor in the transport channel also includes a second belt conveyor, and a unloading end of the second belt conveyor is connected to the loading end of the first belt conveyor.

[0011] As a further improvement of the belt conveyor system: the conveyor belt of the second belt conveyor is provided with a positive pattern;

[0012] The positive engraving patterns are divided into two groups symmetrically arranged on the left and right, and each group of positive engraving patterns includes a plurality of first oblique protrusions and second oblique protrusions arranged alternately; the front ends of the first oblique protrusions and the second oblique protrusions face the central area of ​​the conveyor belt, the rear ends of the first oblique protrusions are located at the corresponding side edge of the conveyor belt, and a gap is left between the rear ends of the second oblique protrusions and the corresponding side edge of the conveyor belt; the front ends of the first oblique protrusions on the same side are located outside the front ends of the second oblique protrusions.

[0013] As a further improvement of the belt transport system: a jet cleaning device and a mud storage tank are provided at the bottom of the frame.

[0014] As a further improvement of the belt conveyor system: annular flanges are respectively provided at both ends of the roller body of the driving roller of the belt conveyor.

[0015] As a further improvement of the belt transport system: a transition fillet is provided at the junction of the flange and the roller body.

[0016] As a further improvement of the belt transport system: a friction pattern is provided on the roller body.

[0017] Compared with the prior art, the utility model has the following positive effects:

[0018] 1. The slurry on the first belt conveyor flows into the engraved pattern in the middle under the action of the rollers on both sides, flows downward along the engraved pattern without being blocked by the ore, and is convenient for discharging excess water.

[0019] 2. The connected oblique line segments and bend segments in the engraved patterns can not only deposit the solid part in the slurry, but also slow down the flow of excess water: the solid part will enter the bend segment along the oblique line segment under the action of inertia and automatically deposit, and it is difficult to enter the next oblique line segment, thereby reducing the loss of the solid part with higher gold content; and water has good fluidity, most of the water will cross the bend segment and enter the next oblique line segment, leaving only a small part of the water in the bend segment, while draining the excess water, a small amount of water can be left, avoiding excessive loss of water, and ultimately ensuring that the slurry is within a reasonable concentration range.

[0020] 3. For the case of high water content, a second belt conveyor with a positive pattern can be added at the previous level. The positive pattern can guide the slurry to return to the center of the conveyor belt along the circuitous path formed by the first inclined protrusion and the second inclined protrusion under the action of gravity backflow, where the solid part with a higher density naturally settles in the circuitous path, and a large amount of water returns to the center of the conveyor belt through the circuitous path for the next cycle, and finally falls into the mud pool at the starting point of the belt conveyor, which serves the purpose of quickly discharging excess water and initially adjusting the water content.

[0021] 4. The positive and negative patterns work together to achieve rapid and accurate adjustment of the water content of the slurry.

[0022] 5. Both the engraved and embossed patterns are single-guide patterns, which have a buffering and decelerating effect on the reverse direction of the slurry when the belt is running on a slope in the forward direction. After the conveyor belt passes the vertex drive roller and changes direction, the pattern runs in the reverse direction, and the reverse pattern has the effect of accelerating the flow of mud water. In conjunction with the jet cleaning device installed at the bottom of the frame, it can efficiently clean the mud water left on the belt, reduce the mud dripping under the belt conveyor, ensure the cleanliness of the equipment, and reduce the intensity of manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram showing that the conveyor belt is concave in the middle under the action of the rollers;

[0025] Figure 3 is a schematic diagram of the engraved pattern on the first belt conveyor;

[0026] Figure 4 is a schematic diagram of the positive pattern on the second belt conveyor;

[0027] Figure 5 Schematic diagram of the driving roller part. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0029] like Figure 1 A belt conveyor system includes a belt conveyor arranged in a transport channel. The belt conveyor is used to lift ore and entrained ore pulp, and the belt conveyor is inclined, with the feeding end being lower than the unloading end.

[0030] like Figure 1 , 2 5. The belt conveyor includes a frame 101, a driving roller 103 and a driven roller 106 mounted on the frame 101, and a conveyor belt 105 connected between the driving roller 103 and the driven roller 106. The frame 101 is also provided with two groups of left and right rollers 102. The portion of the conveyor belt 105 located above the frame 101 is supported by the rollers 102 and is concave in the middle.

[0031] The driving roller 103 can be arranged at the unloading end and driven by a motor. Figure 5 , an annular flange 104 is provided at both ends of the roller body of the driving roller 103 of the belt conveyor. A transition fillet is provided at the joint between the flange 104 and the roller body. The flange 104 and the transition fillet can prevent the conveyor belt 105 from running off and correct the position of the conveyor belt 105 in time. The roller body is provided with a cross-shaped friction pattern, which can increase the direct friction with the conveyor belt 105 and prevent the conveyor belt 105 from slipping.

[0032] Furthermore, the belt conveyor at least includes a first belt conveyor 1 close to the upper end of the transport channel, and the conveyor belt 105 of the first belt conveyor 1 is provided with an engraved pattern.

[0033] like Figure 3 The engraved pattern includes a plurality of connected J-shaped grooves, each J-shaped groove includes an oblique line segment 1051 and a bend segment 1052 whose head end is tangentially connected to the rear end of the oblique line segment 1051, and the opening of the bend segment 1052 faces the front end, i.e., the direction of the unloading end of the first belt conveyor 1. The front end of the oblique line segment 1051 is located in the center of the belt, and the rear end points to one side edge of the conveyor belt 105, and the rear ends of the oblique line segments 1051 of two adjacent J-shaped grooves point to two different side edges of the conveyor belt 105.

[0034] For adjacent J-shaped grooves: the front end of the oblique line segment 1051 of the next J-shaped groove is connected to the middle of the oblique line segment 1051 of the previous J-shaped groove, and the tail end of the bend segment 1052 of the previous J-shaped groove is connected to the middle of the oblique line segment 1051 of the next J-shaped groove.

[0035] Furthermore, the belt conveyor further comprises a second belt conveyor 2, which is the previous stage of the first belt conveyor 1, and its unloading end is connected to the loading end of the first belt conveyor 1. The ore and slurry are first lifted by the second belt conveyor 2, then fall onto the first belt conveyor 1, and finally enter the next stage equipment (crushing device).

[0036] Specifically, Figure 4 , the conveyor belt 105 of the second belt conveyor 2 is provided with a positive pattern. The positive pattern is arranged in two groups symmetrically on the left and right, and each group of positive patterns includes a plurality of first oblique protrusions 1053 and second oblique protrusions 1054 arranged alternately, and the first oblique protrusions 1053 and the second oblique protrusions 1054 on the same side are parallel to each other. The front ends of the first oblique protrusions 1053 and the second oblique protrusions 1054 face the central area of ​​the conveyor belt 105, the rear ends of the first oblique protrusions 1053 are located at the corresponding side edge of the conveyor belt 105, and a gap is left between the rear ends of the second oblique protrusions 1054 and the corresponding side edge of the conveyor belt 105; the front ends of the first oblique protrusions 1053 on the same side are located outside the front ends of the second oblique protrusions 1054.

[0037] It should be noted that, when describing the pattern, the front-to-back direction specifically refers to the direction when the pattern moves to the top of the frame 101 .

[0038] The bottom of the frame is also provided with a jet cleaning device and a mud storage tank, wherein the jet cleaning device is in multiple groups and is arranged at intervals along the length direction of the mud storage tank. Each group of the jet cleaning device comprises a cleaning water nozzle and a compressed gas nozzle, respectively, and the cleaning water nozzle and the compressed gas nozzle spray toward the conveyor belt at the bottom of the belt conveyor.

[0039] During operation, the ore with the ore pulp first falls onto the second belt conveyor 2. During the lifting process of the second belt conveyor 2, the water content is pre-treated, and the excess water is first discharged through the positive pattern to control the water content within a medium range: the inclined positive pattern can guide the excess water to flow out quickly from the two side edges of the conveyor belt 105, while the solid part has a larger density and will flow along the circuitous path formed by the first inclined protrusion 1053 and the second inclined protrusion 1054 under the action of gravity ( Figure 4 The middle dotted line portion) returns to the center of the conveyor belt 105 again, thereby achieving the purpose of quickly draining excess water and initially adjusting the moisture content.

[0040] However, the second belt conveyor 2 cannot accurately control the water content, so the water content must be further adjusted with the help of the engraved pattern. After the ore and slurry enter the first belt conveyor 1, the slurry continues to flow downward relative to the conveyor belt 105 along the engraved pattern under the action of gravity: the solid part will enter the bend section 1052 along the oblique section 1051 under the action of inertia and automatically deposit, and it is difficult to enter the next oblique section 1051, thereby reducing the loss of the solid part with a higher gold content. The water has good fluidity, and most of the water will cross the bend section 1052 and enter the next oblique section 1051, leaving only a small part of the water in the bend section 1052. While draining the excess water, a small amount of water can also be left, avoiding excessive water loss, and ultimately ensuring that the slurry is within a reasonable concentration range. The slurry and ore that reach the upper end of the first belt conveyor 1 will enter the next equipment.

[0041] If the water content of the ore pulp entering the transport system is low and relatively stable, the excess water cannot be discharged under the guidance of the positive pattern. At this time, the second belt conveyor may not be used for pretreatment, and only one or more first belt conveyors arranged in series may be used.

[0042] Furthermore, both the engraved and embossed patterns are single-guide patterns, which have a buffering and decelerating effect on the reverse direction of the slurry when the belt is running on a slope in the forward direction. After the conveyor belt passes the vertex drive roller and changes direction, the pattern runs in the reverse direction, and the reverse pattern has the effect of accelerating the flow of mud water toward the ground. At this time, the jet cleaning device set at the bottom of the frame can effectively clean the mud water left on the belt.

[0043] The "control of moisture content" mentioned in this article does not mean precise control, but ensuring that the moisture content is within a relatively reasonable range and does not exceed the moisture content requirement range of the next-level crushing device.

[0044] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A belt conveyor system, comprising a belt conveyor arranged in a transport channel, wherein the loading end of the belt conveyor is lower than the unloading end, the belt conveyor comprising a frame (101), a driving roller (103) and a driven roller (106) mounted on the frame (101), and a conveyor belt (105) connected between the driving roller (103) and the driven roller (106), the frame (101) further comprising two groups of left and right rollers (102), the portion of the conveyor belt (105) located above the frame (101) being supported by the rollers (102) and being concave in the middle, characterized in that: The belt conveyor in the transport channel comprises a first belt conveyor (1) close to the upper end of the transport channel, and a conveyor belt (105) of the first belt conveyor (1) is provided with an engraved pattern; The engraved pattern comprises a plurality of connected J-shaped grooves, each J-shaped groove comprises an oblique line segment (1051) and a bend segment (1052) whose head end is tangentially connected to the rear end of the oblique line segment (1051), and the opening of the bend segment (1052) faces the front end, i.e., the direction of the unloading end of the first belt conveyor (1); the front end of the oblique line segment (1051) is located in the center of the belt, and the rear end points to one side edge of the conveyor belt (105), and the rear ends of the oblique line segments (1051) of two adjacent J-shaped grooves point to two different side edges of the conveyor belt (105); For adjacent J-shaped grooves: the front end of the oblique line segment (1051) of the next J-shaped groove is connected to the middle of the oblique line segment (1051) of the previous J-shaped groove, and the rear end of the curved segment (1052) of the previous J-shaped groove is connected to the middle of the oblique line segment (1051) of the next J-shaped groove.

2. The belt conveyor system according to claim 1, characterized in that: The belt conveyor in the transport channel further comprises a second belt conveyor (2), the unloading end of the second belt conveyor (2) being connected to the loading end of the first belt conveyor (1).

3. The belt conveyor system according to claim 2, characterized in that: The conveyor belt (105) of the second belt conveyor (2) is provided with a relief pattern; The positive engraving patterns are arranged in two groups symmetrically on the left and right, and each group of positive engraving patterns includes a plurality of first oblique protrusions (1053) and second oblique protrusions (1054) arranged in an alternating manner; the front ends of the first oblique protrusions (1053) and the second oblique protrusions (1054) face the central area of ​​the conveyor belt (105), the rear ends of the first oblique protrusions (1053) are located at the corresponding side edge of the conveyor belt (105), and a gap is left between the rear ends of the second oblique protrusions (1054) and the corresponding side edge of the conveyor belt (105); the front ends of the first oblique protrusions (1053) on the same side are located outside the front ends of the second oblique protrusions (1054).

4. The belt conveyor system according to any one of claims 1 to 3, characterized in that: A jet cleaning device and a mud storage tank are provided at the bottom of the frame.

5. The belt conveyor system according to claim 4, characterized in that: An annular flange (104) is provided at each end of the roller body of the driving roller (103) of the belt conveyor.

6. The belt conveyor system according to claim 5, characterized in that: A transition fillet is provided at the junction of the flange (104) and the roller body.

7. The belt conveyor system according to claim 5, characterized in that: The roller body is provided with a friction pattern.

Images